New E class Diesel Blue Efficiency fuel consumption

[Monkeylegend]

Wondering what people are achieving in the real world.

Mercedes quote 36.2 mpg for the urban cycle and 48.7 for the combined for the 220CDi and 250CDi auto's. I had 250 courtesy car which was showing it had averaged 33.2mpg over the first 6500 miles so had obviously been driven hard. I have a colleague who is struggling to get more than 42 mpg with 90% motorway driving in his 250CDi.

Is anybody getting anywhere near the quoted figures?

I was looking to change my '07 plate 220CDi which is averaging 47mpg mostly motorway driving in the hope of reducing fuel consumption but I am now wondering if I should go for the last of the old model instead.

[gizlaroc]

Depends if 5mpg is worth getting into an old model or not??

I do around 40k miles a year so 5mpg makes feck all diffferce to me. You would need to be doing 100k a year to make it really matter surely??

[Monkeylegend]

gizlaroc said:

Depends if 5mpg is worth getting into an old model or not??

I do around 40k miles a year so 5mpg makes feck all diffferce to me. You would need to be doing 100k a year to make it really matter surely??

I do about 95k a year, so it makes a difference of approx £1400 per annum at the current price. But I was really wondering if the new E Class is as economical as Merc claim. My feeling so far is that most people will struggle to achieve the quoted figures by a significant amount.

Edited by Monkeylegend on Wednesday 14th April 16:24

[amokwa]

I have my doubts too. Had an E250 sport CDI courtesy car high 20s to mid 30s however engine had less than 500 miles and it was all town driving.

Also had a brand new C180 sport petrol turbo last month, mid 20s engine was having to work hard all the time hunting up and down the auto box.

[bolide]

So the fuel cost difference is around £100 / month. But what will the car be costing you in depreciation?

Nick Froome

[E55 Max]

It's difficult to get a long term result on these engines as most seem to have failed due to the injector problem!

[gizlaroc]

I don't think any cars can get the quoted figures these days, especially the heavier ones.

UK road design kills mpg for a start, why do we have roundabouts every few miles to join roads on dual carrigeways?? The road should be designed for people to filter on and off.
In France I averaged around 34mpg in my 535d sport touring and over here it was 26mpg, massive difference.

[Monkeylegend]

bolide said:

So the fuel cost difference is around £100 / month. But what will the car be costing you in depreciation?

Nick Froome

It's a working car so the more miles I do the better. Write down £3k per year depreciation, then write off the balance when I change,approx £10k every 3rd year, so depreciation is not such a big factor.

Anyway just read this months What Car and they only got 43mpg from their new 220CDi on a 400 plus mile run against the claimed 53 by Merc, so that goes a long way to answering my question. I have just averaged 55.6mpg today on a 550 mile run, all motorway,and mine has done 195k miles in just over 2 years.